The core and vdd PMIC buck regulators were misconfigured, which caused instability of the board and malfunction of high-speed interfaces, like the RGMII. Configure the PMIC correctly to repair these problems. Also, model the missing Enpirion EP53A8LQI on the DHCOR SoM as a fixed regulator.
Signed-off-by: Marek Vasut marex@denx.de Cc: Patrick Delaunay patrick.delaunay@st.com Cc: Patrice Chotard patrice.chotard@st.com --- V2: - Model the Enpirion EP53A8LQI on the DHCOR SoM as a fixed regulator - Adjust the PMIC voltages further --- arch/arm/dts/stm32mp157a-avenger96.dts | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/arch/arm/dts/stm32mp157a-avenger96.dts b/arch/arm/dts/stm32mp157a-avenger96.dts index 7a4b6e6a2c..4fa20bc31d 100644 --- a/arch/arm/dts/stm32mp157a-avenger96.dts +++ b/arch/arm/dts/stm32mp157a-avenger96.dts @@ -91,6 +91,17 @@ states = <1800000 0x1>, <2900000 0x0>; }; + + /* Enpirion EP3A8LQI U2 on the DHCOR */ + vdd_io: regulator-buck-io { + compatible = "regulator-fixed"; + regulator-name = "buck-io"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + vin-supply = <&vdd>; + }; };
ðernet0 { @@ -167,7 +178,7 @@
vddcore: buck1 { regulator-name = "vddcore"; - regulator-min-microvolt = <1200000>; + regulator-min-microvolt = <800000>; regulator-max-microvolt = <1350000>; regulator-always-on; regulator-initial-mode = <0>; @@ -185,8 +196,8 @@
vdd: buck3 { regulator-name = "vdd"; - regulator-min-microvolt = <3300000>; - regulator-max-microvolt = <3300000>; + regulator-min-microvolt = <2900000>; + regulator-max-microvolt = <2900000>; regulator-always-on; st,mask_reset; regulator-initial-mode = <0>; @@ -268,6 +279,7 @@ regulator-name = "vbus_otg"; interrupts = <IT_OCP_OTG 0>; interrupt-parent = <&pmic>; + regulator-active-discharge = <1>; };
vbus_sw: pwr_sw2 { @@ -304,7 +316,7 @@ };
&pwr_regulators { - vdd-supply = <&vdd>; + vdd-supply = <&vdd_io>; vdd_3v3_usbfs-supply = <&vdd_usb>; };